#include <iostream>
#include <ctime>

#define DBG_LEVEL 0
#define INF_LEVEL 1
#define ERR_LEVEL 2
#define DEFAULT_LEVEL DBG_LEVEL

#define LOG(level_str, level, format, ...) {\
    if(level >= DEFAULT_LEVEL){\
        time_t t = time(nullptr);\
        struct tm *time = localtime(&t);\
        char time_str[32];\
        strftime(time_str, sizeof(time_str), "%Y-%m-%d %H:%M:%S", time);\
        printf("[%s][%s][%s:%d]\t" format "\n", level_str, time_str, __FILE__, __LINE__, ##__VA_ARGS__);\
    }\
}
#define DLOG(format, ...) LOG("DBG", DBG_LEVEL, format, ##__VA_ARGS__)
#define ILOG(format, ...) LOG("INF", INF_LEVEL, format, ##__VA_ARGS__)
#define ELOG(format, ...) LOG("ERR", ERR_LEVEL, format, ##__VA_ARGS__)